S$167 Cheap Flights from St. Louis to Washington

View S$167 flight on Tue, 11 Mar,2025Opens in a new window

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Cheap Flights from St. Louis to Washington (STL-DCA)

Prices were available within the past 7 days and start at S$167 for one-way flights and S$556 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$556 Return, found 2 days ago
S$556
Return
found 2 days ago
Select American Airlines flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$556 found 2 days ago
Delta
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$562 Return, found 2 days ago
S$562
Return
found 2 days ago
Select Delta flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$562 found 2 days ago
American Airlines
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$569 Return, found 2 days ago
S$569
Return
found 2 days ago
Select American Airlines flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$569 found 2 days ago
American Airlines
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$589 Return, found 2 days ago
S$589
Return
found 2 days ago
Select American Airlines flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$589 found 2 days ago
Delta
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$597 Return, found 2 days ago
S$597
Return
found 2 days ago
Select Delta flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$597 found 2 days ago
American Airlines
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$602 Return, found 2 days ago
S$602
Return
found 2 days ago
Select American Airlines flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$602 found 2 days ago
Delta
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$603 Return, found 2 days ago
S$603
Return
found 2 days ago
Select Delta flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$603 found 2 days ago
Delta
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$615 Return, found 2 days ago
S$615
Return
found 2 days ago
Select Delta flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$615 found 2 days ago
American Airlines
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$633 Return, found 2 days ago
S$633
Return
found 2 days ago
Select American Airlines flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$633 found 2 days ago
United
Sat, 8 Mar - Sun, 9 Mar
STL
St. Louis
DCA
Washington
S$656 Return, found 2 days ago
S$656
Return
found 2 days ago
Select United flight, departing Sat, 8 Mar from St. Louis to Washington, returning Sun, 9 Mar, priced at S$656 found 2 days ago
St. Louis to Washington route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Ronald Reagan Washington National
Return price
S$555
Distance
1147 km

Flights from St. Louis to Washington

When looking for plane tickets from St. Louis to Washington, the ease and convenience of using Expedia simply can’t be beat. With tons of departure points and flights options from the top airline carriers, Expedia gives you the widest array of cheap flights to Washington. Look for STL to DCA airfare with the assurance that you have the largest online travel agency working for you.

Expedia lets you search across the largest number of airlines and Washington flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your St. Louis Washington flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your St. Louis to Washington trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Washington flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from St. Louis to Washington with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from STL to National Airport?
The lowest price advertised for a round-trip journey from St. Louis Lambert International Airport to National Airport is S$556. But you better move fast. This price is taken from fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from STL to DCA?
This differs between airlines, as each has its own terms and conditions. Visit the Customer Service Portal, where there are instructions on how to cancel online.
How do I find cheap flights from Lambert Field to National Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for St. Louis Lambert International Airport to Ronald Reagan Washington National Airport (DCA) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Lambert Field to National Airport?
With a flight distance of 1,150 kilometres, it’s just a short hop from STL to Ronald Reagan Washington National Airport (DCA). It might be a quick one, but it’s still worth packing a good book to read.
Which airlines fly direct from St. Louis Lambert International Airport to Ronald Reagan Washington National Airport (DCA)?
Many adventurers like to fly with Southwest Airlines (WN) from Lambert Field to DCA. It offers 117 monthly flights, so you can pick a flight time that’s right for you. You could also take a look at the fares on offer with American Airlines (AA). This airline operates 108 flights every month between St. Louis and Arlington.
Are Lambert Field to Ronald Reagan Washington National Airport (DCA) flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally pick up a bargain, with some super cheap fares from Lambert Field to DCA cropping up a few weeks before the departure date. If you’d rather plan ahead of time, Expedia compares and updates all the best flight deals continually — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines issue prices so far in advance.
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